Visenya

Queen Visenya Targaryen was skilled in the use of Dark Sister, having trained beside her younger brother, King Aegon I Targaryen, since childhood. During the First Dornish War, the Targaryens were attacked on multiple occasions by assassins sent by Dorne.[3] Visenya was attacked one night in King's Landing, and the queen slew the last assassin with Dark Sister after two of her escorts were killed.[4] Visenya also twice wielded her longsword against Dornish assassins in Aegon's defense,[5] with one such attack taking place in 10 AC.[6] When Aegon proclaimed he still felt sufficiently protected by his guards, Visenya quickly drew Dark Sister and cut Aegon's cheek before the king's defenders could react. Aegon then entrusted Visenya with establishing the Kingsguard.[6]

After Dowager Queen Visenya died on Dragonstone in 44 AC, the hostage Dowager Queen Alyssa Velaryon, Aenys's widow, fled from with her children Jaehaerys and Alysanne, taking Dark Sister from Visenya's chamber.[8] In 48 AC, Jaehaerys carried Dark Sister when he announced his claim to the Iron Throne at Storm's End. The prince became king after Maegor died on the throne.[7]

Baelon the Brave

Prince Baelon Targaryen, one of King Jaehaerys's sons, wielded Dark Sister in 92 AC when avenging the death of his brother, Prince Aemon, who had been slain by Myrish exiles who had invaded and occupied Tarth. Baelon the Brave slew countless Myrmen with the blade.[9]